body {
    background-color: #f5f5f5;
}
.page-container {
    width: 100%;
    height: 40px;
    background-color: #3190e8;
    .van-nav-bar__title {
        color: #fff;
        font-size: 18px;
    }
    .van-nav-bar__title {
        font-weight: bold;
    }
}